Hi Rob,
Welcome to this Microsoft Project newsgroup
Try Help/Detect and Repair. You'll probably need the CD. If it says it
cannot be found, try searching for the file on the CD and directing the
installation to that file.
FAQs, companion products and other useful Project information can be seen at
this web address:
http://project.mvps.org/faqs.htm
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP